12 Hour Shifts: Hours, Pay & Overtime
Twelve-hour shifts are standard for nurses, security and emergency services. They pay well because of how overtime stacks — but only if you know where the overtime line falls. Here is the full picture.
Paid Hours on a 12 Hour Shift
A 12-hour shift is 12 hours of clock time. After an unpaid break:
| Break | Paid hours |
|---|---|
| Paid break | 12.0 |
| 30 min unpaid | 11.5 |
| 1 hour unpaid | 11.0 |
Many 12-hour roles (especially healthcare) keep breaks paid because workers stay on call, so the full 12 is often paid — but always check your policy.
How Much a 12 Hour Shift Pays
This is where 12-hour shifts get lucrative: on a daily 8-hour overtime rule, every 12-hour shift has 4 overtime hours. Example at $25.00/hr base, paid break (12 paid hours):
- Regular: 8 × $25 = $200
- Overtime: 4 × $25 × 1.5 = $150
- Gross: $350 for one shift
Compare that to three 8-hour days (24 hours, no overtime) at $25 = $600, versus two 12-hour shifts (24 hours, 8 of them overtime) = $700. Same hours, $100 more — entirely from overtime stacking.
The same number of hours can pay noticeably more as 12-hour shifts, because more of those hours fall into the 1.5x overtime band — but only under a daily overtime rule.
The Weekly-Rule Caveat
If your workplace uses a weekly 40-hour overtime rule instead of a daily one, the per-shift overtime above disappears. Three 12-hour shifts is 36 hours — under 40, so no overtime at all. The rule that applies to you completely changes 12-hour-shift pay. See our overtime pay guide.
Common 12 Hour Rotations
- 3 on / 4 off - Three 12-hour shifts a week (36 hours), very common in nursing.
- 4 on / 4 off - Alternating blocks, common in security and manufacturing.
- Pitman (2-3-2) - A 14-day cycle averaging 42 hours/week, used in 24/7 operations.
Who Works 12 Hour Shifts
Healthcare (nurses, techs), emergency services, security, manufacturing, oil and gas, and other 24/7 operations. The appeal is fewer working days and long stretches off; the trade-off is fatigue, which is why night 12s in particular need careful rest planning.
12 Hour Shift With a Differential
Night and weekend 12-hour shifts often add a differential on top of the overtime. A 12-hour night shift at $25/hr with a 20% night differential, daily overtime rule: subtotal $350 (from above) × 1.20 = $420 gross. See night shift differential pay.
Calculate your 12-hour shift pay
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Open the Shift CalculatorFrequently Asked Questions
How many paid hours is a 12 hour shift?
A 12-hour shift is 12 hours of clock time. With a 30-minute unpaid break it is 11.5 paid hours; with a 1-hour break, 11. Many 12-hour roles keep breaks paid, so the full 12 is often paid.
How much does a 12 hour shift pay?
Under a daily 8-hour overtime rule, a 12-hour shift has 8 regular and 4 overtime hours. At $25/hr that is (8 x $25) + (4 x $37.50) = $350 gross before tax for one shift.
Do 12 hour shifts get overtime?
Under a daily 8-hour rule, yes — every 12-hour shift has 4 overtime hours. Under a weekly 40-hour rule, three 12-hour shifts total 36 hours and have no overtime. The applicable rule matters.
What is a 3 on 4 off 12 hour rotation?
It means working three 12-hour shifts then having four days off, totalling 36 hours a week. It is very common in nursing and other healthcare roles.
Why do 12 hour shifts pay more for the same hours?
Because more hours fall into the 1.5x overtime band under a daily overtime rule. Two 12-hour shifts (24 hours) include 8 overtime hours, while three 8-hour days (also 24 hours) include none.
This guide explains common scheduling and pay practice for general education. Overtime and break rules vary by region and employer — always confirm the rules that apply to your job.